package com.udp2;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
class UDPClient{
    public static void main(String[] args)throws IOException{
    	
    	int port = 8080;
        DatagramSocket client = new DatagramSocket();
        String sendStr = "Hello! I'm Client";
		byte[] sendBuf;
		sendBuf = sendStr.getBytes();
        InetAddress addr = InetAddress.getByName("127.0.0.1");
       
        DatagramPacket sendPacket 
            = new DatagramPacket(sendBuf ,sendBuf.length , addr , port);
        client.send(sendPacket);
        byte[] recvBuf = new byte[100];
        DatagramPacket recvPacket
            = new DatagramPacket(recvBuf , recvBuf.length);
        client.receive(recvPacket);
        String recvStr = new String(recvPacket.getData() , 0 ,recvPacket.getLength());
        System.out.println("客户端收到:" + recvStr);
        client.close();
    }
}